i hava 1999 ford contour and the timing belt broke and my car has not been fixable since and i have been without since april.it is a 4cylinder with a duel cams. the problem is it will not idle and its running very rich. the guy that has been working on it is abput to give up because he doesn't have a clue what and why its running like it is.my o2 sensors are fine. can someone please tell what is wrong with it,why wont it idle and why is it running rich.i am very desparate and need some advice about this stupid car.he is also open for suggestions also.if anyone knows the cause or how to fix the problem i would be more than glad to give you the name and number of the mechanic to contact to help with this problem.